Fbakk stock



{N6 Model.)

' P. STOCK,Jr.

2 Sheets-Sheet 1.

PUMP VALVE. f

' Patentd Oct. 16, 1883. r

(No Model. 2 Sheets-Sheet 2.

F. STOCK. Jr.

PUMP VALVE.

Patented Oct. 16, 1883..

' UNITED STATES PATE T OFFICE.

FRANK STOCK, hi, OF SA JOSE, CALIFORNIA, ASSIGNOR or TWO-THIRDS ToiJOHNL. sTOCK AND P. H. srOCK, OF sAME PLACE.

PUMP-VALVE.

SPECIFICATION forming part of Letters Patent No. 286,742, dated October16, 1883.

T aZZ whom/it may concern:

Be it known that I, FRANK STOCK, Jr., of San Jose, county of SantaClara, State'of California, have invented an Improved Pump- Valve; and Ihereby declare the following to be a full, clear, and exact descriptionthereof.

My invention relates to the class of pumpvalves, and to certain new anduseful improvements therein.

-ro My invention consists in means for permitting and accomplishing therotation of valve, whereby it may wear more evenly and free itself ofsand and grit, as I shall fully explain.

Referring to the accompanying drawings, Figure 1 is a perspective Viewof my pumpvalve with a portion of the packing a broken away. Fig. 2 is aplan of the bottom of the same. Fig. 3 is a cross-section through B,packing a, valveseat A, and band D, and an elevation of the valve E.Fig. 4 is a portion of a plan and horizontal section through the legs ofbridge B. Fig. 5 is an elevation of a modified form of my invention.Fig. 6'is asection through Fig. 5, showing the valve E in ele- 2 5vation. Fig. 7 is a top view or plan of Fig. 5;

Fig. 8, a view in perspective of the valve E.

In the drawings, A represents a ring or band forming the valve-seat. ais the packing surrounding it. a 0 B is a bridge fitted down to restupon the edge of flange of the valve-seat. C O are the straps by which.the parts are secured to the rod or pole of the pump. These straps havetheir lower ends formed into bolts 5 c, which passdown in grooves formedin the sides of the bridge, and through notches in the flange of thevalve-seat, and through the leather packing a. A

D is a bottom band or guide fitted upon the 0 lower ends of the bolts 0,and held up tightly against the packing by means of nuts d.

E is the valve, having packing e, and lying between the sides of thebridge upon the seat A. This valve has a central stem, f, which 4 5extends upward and plays loosely through the cross-piece of the bridgeB. Upon the under side of the valve are cast radial flanges or wings g.(See Figs. 3, 6, and 8.) One side or surface of these wings is astraight one, while the other is an inclined surface tapering away fromthe. valve. The wings are long enough Application filed May 8, 1883. (Nomodel.)

to extend down within the guide-band D when the valve is down to itsseat, and when the valve is raised they do not rise above the top ofsaid band, which thus acts as a guide for said wings to hold the valveperpendicular. The stem f guides said valve above.

In the ordinary construction of valves for pumps the guides by whichthey are directed are of such character as to prevent the valve fromrotating while still allowing it vertical play. This is the case wherethe valve is provided with two stems, or where it has side studs movingin grooves formed in the body of the device. Having only the verticalplay, any inequality in the valve-seat or packing soon increases byconstant wear until the valve will no longer snugly fit its seat, andwhen sand or grit gets in it there is no way in which the valve can freeitself; but if the valve could rotate both these difficulties would beovercome. By having a central stem, f, such asI have shown, and a,cross-piece through which the stem loosely passes, it is obvious thatwhile permitting the vertical play the valve may also rotate. The wings9 underneath accomplish this result. By being beveled on one side, andstraight on the other, the force of the water isexerted to cause therotation of the valve. At the same time the wings serve as a guide forthe lower part of the valve, as they are confined in the bottomguide-ring, D. I do not confine myself to this precise construction ofthe parts surrounding the valve.

In Figs. 5 and 6 I show the valve-seat and the bottom guide-band cast inone, the bridge cast with an annular base, 12, and fitted on the bottomband through the intervention of packing h. The valve is the same asheretofore de- 0 scribed, and operates in the same manner.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The pump-valve E, having a central stem, 5

f, above and radial wings g on its under side,

said wings having each a straight surface and an inclined surface, incombination with a valve-seat, a guide for the stem,and a guide for thewings, substantially as and for the purioo pose herein described.

2. The pump-valve E, havinga central stem,

7, above and the radial. wings 1 below, said wings having each astraight surface and an inclined surface, in combination with thevalveseat A, the bridge 13, forming a guide for the stem, and the bandD, forming a guide for wings, substantially as herein described.

, 3. The pumpwalve E, hibVlI] g at central stein, f, above and theradial wings g below, having each a straight and inclined surface, asdescribed, in combination with the valve-seat A, 10 bridge B, bottomband, D, and straps G, haw ing bolts 0, securing the whole together,substantially as herein described.

In witness whereof I hereunto set my hand.

FRANK. STOCK, JR. Vitnesses:

R. Mnssmo, G. F. PILLOT.

